body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
                   Roboto, "Helvetica Neue", Arial, "Noto Sans JP", sans-serif;
      line-height: 1.7;
      margin: 0;
      padding: 0;
      background: #f7f8fa;
      color: #222;
    }

    main {
      max-width: 800px;
      margin: 0 auto;
      padding: 24px 16px 64px;
    }

    h1 {
      font-size: 1.8rem;
      margin-bottom: 0.4em;
    }

    h2 {
      margin-top: 2em;
      font-size: 1.3rem;
      border-bottom: 1px solid #ddd;
      padding-bottom: 4px;
    }

    p {
      margin: 0.6em 0 1em;
      color: #333;
    }

    ul {
      padding-left: 1.2em;
    }

    li {
      margin: 0.7em 0;
    }

    a {
      color: #0066cc;
      text-decoration: none;
    }

    a:hover {
      text-decoration: underline;
    }

    .note {
      background: #ffffff;
      border-left: 4px solid #0066cc;
      padding: 12px 16px;
      margin: 1.5em 0;
      color: #333;
      font-size: 0.95rem;
      box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    }

    .status {
      font-size: 0.9rem;
      color: #777;
      margin-left: 6px;
    }